This story resonates so much! I'm in the same space as OP and even doing something similar at http://membean.com .
Where our story digresses is that we got paid traction quickly. Early on we decided we wouldn't be free and we'd convince schools(& parents) that we offered enough value to pay for it. We narrowed in on a very specific need, focussed obsessively on quality, provided our teachers fantastic customer service, kept our burn rate very low, bootstrapped(it was hard) and just buckled down and executed.
Along the way, somehow, and this was crucial, our teachers turned into evangelists - parents, principals and administrators took note. It wasn't that they just liked what we offered -- they went to bat for it. Many of our teachers spent 8+ months convincing their principals and district officials to buy us. Private schools were crucial in the beginning to get our cash flow going, public schools took longer but we waited patiently (and nervously)
The current ecosystem is not friendly to Ed startups, it's stacked in favor of the large Ed vendors who have the manpower to closely follow budget allocations, develop long term relationships across 50 states and have deep knowledge on how to work the system.
OP, congrats for sticking to this for so long. I suspect that it was incredibly draining but along the way you've helped countless teachers & students and that should count for a lot.
As you pointed out, the quality of decks is important. Limiting scope allows for creation of quality decks. At the end of the day spacing is just one aspect of forgetting - strong encoding is the other and for that you need rich varied content. Creating quality content is hard work. We started off with a focus on algorithms and engines and then realized that even if we slap the very best Memory engine if you have crappy content - no one cares (and retention is marginal over simplistic flash cards). We invested a lot of work on content and varied encoding and it's paid off and we are now branching into different verticals.
I've been interested in this for a long while especially in memory models for forgetting patterns beyond simplistic SR expanding schedules.
We developed http://membean.com that utilizes some of this technology and we've been able to make this a successful business albeit in a restricted domain. But as others have pointed out .. it's hard to sell this. We've managed it because of stellar content built around our engine: http://membean.com/exemplars. Without excellent content it would have been hard to get this off the ground despite us able to show that we outperform existing SRS tools.
Where our story digresses is that we got paid traction quickly. Early on we decided we wouldn't be free and we'd convince schools(& parents) that we offered enough value to pay for it. We narrowed in on a very specific need, focussed obsessively on quality, provided our teachers fantastic customer service, kept our burn rate very low, bootstrapped(it was hard) and just buckled down and executed.
Along the way, somehow, and this was crucial, our teachers turned into evangelists - parents, principals and administrators took note. It wasn't that they just liked what we offered -- they went to bat for it. Many of our teachers spent 8+ months convincing their principals and district officials to buy us. Private schools were crucial in the beginning to get our cash flow going, public schools took longer but we waited patiently (and nervously)
The current ecosystem is not friendly to Ed startups, it's stacked in favor of the large Ed vendors who have the manpower to closely follow budget allocations, develop long term relationships across 50 states and have deep knowledge on how to work the system.
OP, congrats for sticking to this for so long. I suspect that it was incredibly draining but along the way you've helped countless teachers & students and that should count for a lot.